The Frymaster 8160139 Thermostat Knob is a replacement part for commercial kitchen equipment, specifically designed for Frymaster fryers. This 2-1/4" diameter knob allows for precise temperature control within the OFF-375-230°F range. It features a .187" mounting hole and a flat down design for easy installation and secure attachment. https://partsfe.com/dial2-14-d-off-375-230-for-frymaster-part-8160139